燃煤电厂SO_3控制技术综述

Overview of SO_3 Control Technology in Coal-fired Power Plants

目前燃煤电厂为了控制污染物的排放,已经广泛采用了脱硝、除尘和脱硫等技术,但是这些技术对SO_3的控制不尽人意。近年来,燃煤电厂SO_3的脱除也成为人们关注的热点。文章介绍了几种常见的SO_3控制技术,包括燃料混合、低氧化率SCR催化剂、碱性吸附剂喷射、低低温电除尘器、湿法脱硫和湿式电除尘等,简单地阐述了其工作原理,提出了燃煤电厂SO_3控制的基本方向。

At present,coal-fired power plants have widely used denitration,dust removal and desulphurization to control the discharge of pollutants. However,the control of these technologies to SO_3 is not satisfactory. In recent years,the removal of SO_3 from coal-fired power plants has also become a hot topic of concern. This paper introduces several common SO_3 control technology,including fuel mixing technology,low oxidation rate of SCR catalyst technology,alkaline sorbent injection technology,low temperature electrostatic precipitator technology,wet desulfurization technology and wet electrostatic precipitator technology,gives a brief introduction of its working principle,proposes the basic direction of SO_3 control in coal-fired power plant.